From The Irish Fireside, Volume 1, Number 9, August 27, 1883
This warlike sept was descended from Callachan Cashel (the forty-second Christian King of Munster), who had the supreme honour of driving the Danes out of Munster, after a series of sanguinary battles. The name comes from the Irish word Ceallach - War. They were long a powerful and influential family in Munster.
Argent, in base a mond vert, on the sinister side a hurst of oak trees, therefrom issuant a wolf pass, ppr; crest, a dexter arm embowed, holding a sword entwined with a snake, ppr; motto, Fidus et audax.